Question

Which part of the ovary acts as an endocrine gland after ovulation?
A. Stroma
B. Vitelline gland
C. Graffian follicle
D. Oocyte

Answer 1

Hint: Endocrine glands are the ductless glands. The secretions of the endocrine glands are known as hormones, which are low molecular weight chemicals. Moreover, ovulation is the process of the release of the ovum from the ovary.

Complete answer: During the follicular phase of the menstrual cycle, the primary follicles in the ovary grow and develop into fully mature graffian follicles. The graffian follicle contains the ovum or the secondary oocyte. When the estrogen level rises, the Graffian follicle reaches the surface of the ovary. After this, the LH surge occurs causing the graffian follicle to rupture. As soon as the ovum is released, the luteal phase or the secretory phase onsets. During this luteal phase, the graffian follicle turns into the corpus luteum in the ovary. This corpus luteum secretes large amounts of progesterone and estrogen hormones. This hormone maintains the endometrium. Therefore, the Graffian follicle acts as an endocrine gland. Thus, based on the above information we can conclude that the Graffian follicle part of the ovary acts as an endocrine gland after ovulation.
Hence, the correct answer is option (C).

Note: The graffian follicle is a yellowish mass of the follicular cells. The LH causes the cells of the ruptured graffian follicles to convert into the corpus luteum. The LH makes the corpus luteum to secrete progesterone and estrogen hormones. The low levels of the LH hormone cause the degeneration of the corpus luteum. Due to this reason, there is a sudden decline in the levels of progesterone and menstruation occurs.